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1. A deep-UV optical frequency comb at 205 nm
Topic: Optical Physics
Published: 5/25/2009
Authors: Scott A Diddams, E Peters, P Fendel, S Reinhardt, T W Hansch, T Udem
Abstract: By frequency quadrupling a picosecond pulse train from a Ti:sapphire laser at 820 nm we generate a frequency comb at 205 nm with nearly bandwidth-limited pulses. The nonlinear frequency conversion is accomplished by two successive frequency doubling ...

2. A versatile light-emitting-diode-based spectral response measurement system for photovoltaic device characterization
Topic: Optical Physics
Published: 6/29/2012
Authors: Behrang H Hamadani, John F Roller, Brian P Dougherty, Howard W Yoon
Abstract: An absolute differential spectral response measurement system for solar cells is presented. The system couples an array of light emitting diodes (LEDs) with an optical waveguide to provide large area illumination. Two unique yet complementary measur ...

3. Calibration of an Astrophysical Spectrograph below 1 m/s using a Laser Frequency Comb
Topic: Optical Physics
Published: 6/4/2012
Authors: David F Phillips, Alexander G Glenday, Chih-hao Li, Claire Elizabeth Cramer, Gabor Furesz, Guoquing Chang, Andrew Benedick, Li-Jin Chen, F X Kaertner, Sylvain G Korzennik, Dimitar Sasselov, Andrew Szentgyorgyi, Ronald L Walsworth
Abstract: We deployed two wavelength calibrators based on laser frequency combs (,astro-combsŠ) at an astronomical observatory. One astro-comb operated over a 100 nm band in the deep red ( 800 nm) and a second operated over a 20 nm band in the blue ( 400 nm) ...

4. Computational Parameters in Simulation of Microscope Images
Topic: Optical Physics
Published: 11/28/2008
Authors: Egon Marx, James Edward Potzick
Abstract: The simulation of microscope images computed from scattered fields determined using integral equations depend on a number of parameters that are not related to the scatterer or to the microscope but are choices made for the computation method. The ...

5. Demonstration of Superluminal Images
Topic: Optical Physics
Published: 6/19/2012
Authors: Ryan Thomas Glasser, Ulrich Vogl, Paul D Lett
Abstract: Optical pulse propagation with group velocities larger than the speed of light in vacuum, c, or negative, have been demonstrated theoretically and experimentally in a variety of systems [1‹5]. The anomalous dispersion required for generating ,fastŠ l ...

6. Efficient fiber optic detection of trapped ion flourescence
Topic: Optical Physics
Published: 7/9/2010
Authors: Aaron Vandevender, Yves Colombe, Jason Amini, Dietrich G Leibfried, David J Wineland
Abstract: Integration of fiber optics may play a critical role in the development of quantum information processors based on trapped ions, atoms, and quantum dots. Fibers could help enable a scalable and efficient means of collecting light from and deliverin ...

7. Electron Vortex Beams with High Quanta of Orbital Angular Momentum
Topic: Optical Physics
Published: 1/14/2011
Authors: Benjamin James McMorran, Amit Kumar Agrawal, Ian M. Anderson, Andrew A Herzing, Henri J Lezec, Jabez J McClelland, John Unguris
Abstract: Analogous to vortices in light optical beams, electron optical beams with helical wavefronts carry orbital angular momentum and promise new capabilities for electron microscopy and other applications. We use nanofabricated diffraction holograms in an ...

8. Experimental demonstration of a receiver beating the standard quantum limit for multiple nonorthogonal coherent-state discrimination
Topic: Optical Physics
Published: 1/6/2013
Authors: Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Julius Goldhar, Jonathan Kosloski, Alan L Migdall
Abstract: The measurement of the state of a quantum system with inherent quantum uncertainty (noise) approaching the ultimate physical limits is of both technological and fundamental interest. Quantum noise prevents any mutually nonorthogonal quantum states ...

9. Extending single-photon optimized superconducting transition edge sensors beyond the single-photon counting regime
Topic: Optical Physics
Published: 10/2/2012
Authors: Thomas Gerrits, Brice R. Calkins, Nathan A Tomlin, Adriana Eleni Lita, Alan L Migdall, Richard P Mirin, Sae Woo Nam
Abstract: Typically, transition edge sensors resolve photon number of up to 10 or 20 photons, depending on the wavelength and TES design. We extend that dynamic range up to 1000 photons, while maintaining sub- shot noise detection process uncertainty of the n ...

10. Femtosecond frequency comb measurement of absolute frequencies and hyperfine coupling constants in cesium vapor
Topic: Optical Physics
Published: 4/29/2010
Authors: Jason Stalnaker, Vela Mbele, Vladislav Gerginov, Tara Michele Fortier, Scott A Diddams, Leo Hollberg, C E Tanner
Abstract: We report measurements of absolute transition frequencies and hyperfine coupling constants for the 8S1/2 , 9S1/2 , 7D3/2 , and 7D5/2 states in 133 Cs vapor. The stepwise excitation through either the 6P1/2 or 6P3/2 intermediate state is perform ...

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